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Sensors 2016, 16(12), 2056; doi:10.3390/s16122056

Minimum Interference Channel Assignment Algorithm for Multicast in a Wireless Mesh Network

1
Department of Computer Science, Swaziland Christian University, P.O. Box A624 Swazi Plaza, Mbabane H101, Swaziland
2
Department of Computer Science & Engineering, Seoul National University of Science and Technology, Seoul 01811, Korea
*
Author to whom correspondence should be addressed.
Academic Editors: Luis Javier Garcia Villalba, Anura P. Jayasumana and Jun Bi
Received: 10 August 2016 / Revised: 18 November 2016 / Accepted: 28 November 2016 / Published: 2 December 2016
(This article belongs to the Special Issue Advances on Resources Management for Multi-Platform Infrastructures)
View Full-Text   |   Download PDF [1358 KB, uploaded 2 December 2016]   |  

Abstract

Wireless mesh networks (WMNs) have been considered as one of the key technologies for the configuration of wireless machines since they emerged. In a WMN, wireless routers provide multi-hop wireless connectivity between hosts in the network and also allow them to access the Internet via gateway devices. Wireless routers are typically equipped with multiple radios operating on different channels to increase network throughput. Multicast is a form of communication that delivers data from a source to a set of destinations simultaneously. It is used in a number of applications, such as distributed games, distance education, and video conferencing. In this study, we address a channel assignment problem for multicast in multi-radio multi-channel WMNs. In a multi-radio multi-channel WMN, two nearby nodes will interfere with each other and cause a throughput decrease when they transmit on the same channel. Thus, an important goal for multicast channel assignment is to reduce the interference among networked devices. We have developed a minimum interference channel assignment (MICA) algorithm for multicast that accurately models the interference relationship between pairs of multicast tree nodes using the concept of the interference factor and assigns channels to tree nodes to minimize interference within the multicast tree. Simulation results show that MICA achieves higher throughput and lower end-to-end packet delay compared with an existing channel assignment algorithm named multi-channel multicast (MCM). In addition, MICA achieves much lower throughput variation among the destination nodes than MCM. View Full-Text
Keywords: wireless mesh network; multicast communication; channel assignment; multi-radio multi-channel wireless mesh network wireless mesh network; multicast communication; channel assignment; multi-radio multi-channel wireless mesh network
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

Choi, S.; Park, J.H. Minimum Interference Channel Assignment Algorithm for Multicast in a Wireless Mesh Network. Sensors 2016, 16, 2056.

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